[Help] Hack wont work.

So i tried creating my very first hack but it wont even work,im rly shy to share the code but ive no choice, not sure wat ive done wrong,the msgbox wont even show up
anyway,
code:
Code:
#include <Windows.h>


BOOL WINAPI test(LPVOID){
//[11D0F9BC]
DWORD WeaponMgr = 0xD0F9BC;
//[EAX+13AC]
DWORD Reload = 0x13AC;
//[EDX+13B0]
DWORD ChangeDelay = 0x13B0;

DWORD CShell = (DWORD)GetModuleHandleA("CShell.dll");
DWORD pWeaponMgr = *(DWORD*)(CShell + WeaponMgr);



bool reload = false;
if(!reload){
if(pWeaponMgr){
for(int i=0; i<=750; i++){
if((*(DWORD*)((*(DWORD*)(CShell+WeaponMgr))+(4*i)) ) != NULL){
*(float*)((*(DWORD*)((*(DWORD*)(CShell+WeaponMgr)) +(4*i))) + Reload) = 100;

}
}
}
}

bool changedelay = false;
if(!changedelay){
if(pWeaponMgr){
for(int i=0; i<=750; i++){
if((*(DWORD*)((*(DWORD*)(CShell+WeaponMgr))+(4*i)) ) != NULL){
*(float*)((*(DWORD*)((*(DWORD*)(CShell+WeaponMgr)) +(4*i))) + ChangeDelay) = 100;


}

}
}
}
return 0;
}




//dllmain{
DisableThreadLibraryCalls(hDll);
MessageBoxA(0,"Testing"," ",0);
Beep(523,500);
CreateThread(0,0,(LPTHREAD_START_ROUTINE)test,0,0, 0);
return true;
}